Agronomy and Crop Sciences Commons^™

Factors Affecting The Productivity Of Elephant Grass, G.E D. Tiley

IGC Proceedings (1977-2023)

Elephant grass (Pennisetum purpureum Schumach) is a highly productive and palatable fodder which is widely grown in the tropics (Bogdan, 1977). Optimum utilisation of its production potential is, however, limited by management factors which are associated with plant form and growth habit (Horrell and Tiley, 1970). These factors were studied in a series of trials at Kawanda Research Station, Kampala, Uganda (0°27'N, 32°30'E). A summary of the princi­ pal results is given.

La Definition De La Date Optimale De La Premiere Pature De Quelques Especes Et Varietes De Graminees Fourrageres, B Rutkowska, E Lewicka, A Kolakowska

IGC Proceedings (1977-2023)

La rationalisation du piiturage depend aussi de la date de la piiture, particulierement au printemps, au moment de la pre­miere ou de la deuxieme piiture quand !es tiges floriferes des graminees commencent a se developper (Allerit, 1978 ; Gillet, 1980). On sait que la meilleure periode pour debuter le piiturage se situe lorsque les plantes ont 20-25 cm de hauteur, !es ani­maux mangent mieux et !es pertes par pietinement sont limi­tees. En dehors de cela !es resultats des experiences frarn;aise et suisse (Caputa, 1975; Gillet et al., 1980) montrent qu'a cette hauteur !es jeunes tiges floriferes ont une hauteur de …

Effect Of Plant Density On Yield And Yield Components And Seed Chemical Composition Of Some Sunflower Varieties, N A. Noueldin, M E. El-Bially, B A. El-Ahmer, M G. El-Baz

IGC Proceedings (1977-2023)

The objective of this research is to study the effect of varieties (Mayak, Elorida 2000 and sigce 475), hill distance (20, 30 and 40 cm) and ridge width (50, 60 and 70 cm) on productivity of sunflower (Helianthus annus L.). The highest oil % was obtained by sowing sigco 475 at a 40 cm hills distince under 60 cm. ridge width and the highest oil yield feddan-1* as well as seed yield feddan-1 was obtained by sowing Mayak on 20cm hills under a 50cm ridge width.

Differentiation Of Festuca Pratensis Varieties And Festulolium Hybrids By Electrophoresis, H Hahn, W Schoberlein, K Forster

IGC Proceedings (1977-2023)

In the present study seed proteins and isozymes of varieties and lines of Festuca pratensis and Festulolium were investigated with the aim of finding methods for the discrimination of meadow fescue varieties and the identification of Festulolium hybrids. The banding patterns of ultrathin-layer isoelectric focusing (UTLIEF) of bulked seed samples allowed a clear distinction of Festulolium hybrids of different crossing combinations from each other and in most cases also from their parental species. Despite the outcrossing character, identification of some hybrids and crossing parents was also achieved using protein patterns of single seeds. By means of isozyme electrophoresis of Festuca …

Compared Productivity Of Local Ecotypes And Selected Cultivars Of Perennial Ryegrass (Lolium Perenne) In High Belgium, P Limbourg, Ph Lecomte

IGC Proceedings (1977-2023)

The objective of the trials was to compare the productivity of local ecotypes of perennial ryegrass (Lolium perenne) issued from old permanent pastures of High Belgium to that of adapted cultivars. During 3 consecutive years 2 local ecotypes were compared, in pure seedling at 2 different levels of nitrogenous manure, to 2 cultivars frequently used in seed mixtures for pastures. Results obtained using a cutting cycle wich simulated grazing did not reveal significant differences in terms of forage production or feeding value. These results explain the weak increase in forage production recorded in pastures renovated by reseeding as …

Annual Ryegrass Managed For Reseeding Purposes: Relationship Between Heading Date And Seed Production, Javier Do Canto, D. Giorello

IGC Proceedings (1977-2023)

Annual ryegrass reestablished yearly by allowing natural reseeding is a common practice among Uruguayan farmers. Its success relies on the farmers’ ability to balance grazing and seed production during spring. We tested a set of ryegrass varieties covering a wide range of heading dates under defoliation management. Each variety was managed independently according to its phenological stage, resulting in different closing dates. We tested the varieties’ ability to produce seeds under such management, the effect of heading date on seed yield components, the resulting amount of straw and its effect on summer soil temperatures. A strong negative association between heading …

Nutritional Evaluation Of Banana Peelings From The Various Banana Varieties In Different Regions Of Uganda, J. Nambi-Kasozi, Elly N. Sabiiti, F. B. Bareeba, E. Sporndly

IGC Proceedings (1977-2023)

In Uganda, peri-urban agriculture is very important in sustaining livelihoods of the increasing population in urban and peri-urban (U & PU) areas. However, this form of agriculture has a number of problems, feed shortage being the most important. The agricultural produce brought in from the rural areas is marketed in raw form hence increasing the crop wastes in the market areas. The crop wastes, if properly sorted, can serve as alternative feeds for the animals kept in the U & PU areas. Banana (Musa spp) peelings (BP) constitute the largest proportion of all the crop wastes in most …

Perennial Ryegrass Variety Differences In Nutritive Value Characteristics, T. J. Gilliland, R. E. Agnew, A. M. Fearon, F. E. A. Wilson

IGC Proceedings (1977-2023)

Animal grazing performance at grass is predominately determined by herbage intake rates, with high yielding dairy cows requiring up to 20 kg/d DM within a limited grazing time (Gibb, 1998). Grass nutritional factors such as seasonal patterns in digestibility and water-soluble carbohydrate levels have been linked to animal productivity (Davies et al., 1991), while sward surface height, herbage mass, bulk density and green leaf mass have been shown to promote high grazing intake (Barrett et al., 2001). Furthermore, fatty acid profiles have been shown to improve the unsaturated fatty acid composition of milk, with potential human health benefits …

Perennial Ryegrass Variety Differences In Nutritive Value Characteristics, T. J. Gilliland, R. E. Agnew, A. M. Fearson, F. E. A. Wilson

IGC Proceedings (1977-2023)

Animal grazing performance at grass is predominately determined by herbage intake rates, with high yielding dairy cows requiring up to 20 kg/d DM within a limited grazing time (Gibb, 1998). Grass nutritional factors such as seasonal patterns in digestibility and water-soluble carbohydrate levels have been linked to animal productivity (Davies et al., 1991), while sward surface height, herbage mass, bulk density and green leaf mass have been shown to promote high grazing intake (Barrett et al., 2001). Furthermore, fatty acid profiles have been shown to improve the unsaturated fatty acid composition of milk, with potential human health benefits …

Intake Characteristics Of Diploid And Tetraploid Perennial Ryegrass Varieties When Grazed By Simmental X Holstein Yearling Heifers Under Rotational Stocking Management, R. J. Orr, J. E. Cook, K. L. Young, R. A. Champion, A. J. Rook

IGC Proceedings (1977-2023)

Orr et al. (2003) measured large differences in dry matter (DM) intake rate between 15 intermediate-heading perennial ryegrass varieties when they were continuously stocked with sheep and subsequently explored the extent to which, for 5 of these varieties, these differences could be explained by chemical and morphological traits (Orr et al., 2004a) which could be targeted in grass breeding programmes. Here, four of the 15 varieties, which within ploidy had low or high intake characteristics when grazed by sheep, were rotationally stocked with cattle and intake and sward factors were measured.

Intake Characteristics And Performance Of Contrasting Grass Varieties Continuously Stocked With Sheep, R. J. Orr, J. E. Cook, R. A. Champion, A. J. Rook

IGC Proceedings (1977-2023)

Fifteen intermediate-heading perennial ryegrass (Lolium perenne) varieties were grazed by sheep under continuous variable stocking management. Mean daily grass dry matter intake per ewe was positively correlated with liveweight gain per ewe (r = 0.63) and per ha (r = 0.58) over an 8-month grazing season. Daily intake was not correlated with grazing time (r = 0.12) but was positively correlated with instantaneous dry matter intake rate (r = 0.75). Breeding varieties with high intake rate characteristics should allow increases in the contribution of grazed grass to grassland-based livestock farming. There is now a …

Genetic Resources Of Halophytes And Their Utilization For Sustainable Development Of Russian Rangelands, Nariman Shamsutdinov

IGC Proceedings (1977-2023)

No abstract provided.

Annual Pasture Legumes For Increased Productivity Of Aaline Soils In South‐Western Australia, P. G. H. Nichols, D. R. Mcclements, T. O. Albertsen

IGC Proceedings (1977-2023)

No abstract provided.

Perbedaan Karakter Hasil Tiga Varietas Ubi Jalar Berdasarkan Waktu Panen, Reza Prakoso Dwi Julianto, Edyson Indawan, Sukma Paramita

Jurnal Kultivasi

Ubi jalar (Ipomoea batatas L. (Lam)) merupakan jenis tanaman pangan yang mempunyai kandungan utama karbohidrat, selain itu juga mempunyai kandungan lain yang cukup tinggi seperti kalium, kalsium, protein, vitamin A, dan vitamin C. Masalah utama dalam pengembangan ubi jalar adalah rendahnya hasil dan kualitas hasil yang disebabkan oleh waktu panen yang tidak tepat. Pemanenan yang dilakukan secara tidak tepat akan menurunkan kuantitas dan kualitas hasil. Perbedaan waktu panen juga disebabkan perbedaan varietas tanaman. Tujuan penelitian ini adalah mengetahui waktu panen yang optimal dari masing-masing varietas ubi jalar agar mendapatkan produksi hasil yang optimal. Penelitian dilaksanakan pada bulan Maret – September …

Quality Of Fodder Cowpea Varieties As Influenced By Soil Moisture Stress Levels, S. Lakshmi, M. R. Anita

IGC Proceedings (1977-2023)

A serious drawback of sustainable livestock production system in Kerala is the inadequate seasonal distribution of fodder production. The quantity and quality of herbage available in the lean dry months from January to May is very low. Therefore it is imperative to develop a fodder production system that increases the availability and improves the quality of herbage in the dry summer months. Fodder cowpea (Vigna unguiculata L. Walp) is a legume inherently more tolerant to drought than other fodder legumes (Fatokun et al., 2009) and considered as a crop capable of improving sustainability of livestock production through its …

Arkansas Soybean Performance Tests 2019, J. F. Carlin, R. D. Bond, J. A. Still

Arkansas Agricultural Experiment Station Research Series

Soybean variety and strain performance tests are conducted each year in Arkansas by the University of Arkansas System Division of Agriculture’s Arkansas Crop Variety Improvement Program. The tests provide information to companies developing varieties and/or marketing seed within the State, and aid the Arkansas Cooperative Extension Service in formulating variety recommendations for soybean producers.

2018 Barley Variety Fact Sheets For Western Australia, Blakely Paynter, Georgia Trainor, Raj Malik, Jeremy Curry, Sanjiv Gupta, Sarah Collins, Daniel Huberli, Harmohinder Dhammu, Geoff Thomas, Ben Biddulph

Bulletins 4000 -

This bulletin is designed as a reference to help determine which barley variety to grow in your region. It provides market feedback, relative grain yield comparisons, disease ratings, agronomic information and herbicide tolerance ratings for all malt barley varieties segregated in Western Australia (WA) and selected feed varieties.

The decision whether to grow barley with a malt or feed classification depends on five main factors:

(1) Premium paid for different varieties when segregated.

(2) Relative grain yield of malt and feed grade barley varieties.

(3) Differences in input costs due to their agronomic and disease characteristics.

(4) Likelihood that grain …

Pumpkin Variety Trial Uri 2016, Rebecca Brown

University of Rhode Island Vegetable Production Research Reports

No abstract provided.

Brassica Variety Trials 2012, Rebecca Brown

University of Rhode Island Vegetable Production Research Reports

Variety trials of broccoli, cauliflower and Brussels sprouts conducted in Kingston, RI, USA.

2013 Barley Variety Sowing Guide For Western Australia, Blakely Paynter, Andrea Hills, Harmohinder Dhammu, Sanjiv Gupta

Bulletins 4000 -

This publication presents general information on market demand by industry sector, variety and Port Zone for each of the malting barley varieties that will potentially be segregated in Western Australia at the 2013/14 harvest (Tables 1, 2 and 3).

This information is presented on behalf of the Grain Industry of Western Australia (GIWA) Barley Council. It represents the expected demand from domestic and international customers of Western Australian barley. Before planting any variety with a malting or food classification growers are advised to talk to their preferred grain acquirer to determine their demand for each malt and food variety, potential …

Wheat Variety Guide For Wa 2012, Brenda Shackley, Sarah Ellis, Christine Zaicou, Harmohinder Dhammu, Manisha Shankar, Mohammad Amjad

Bulletins 4000 -

The wheat variety guide summarises performance characteristics of commercially available wheats which have undergone testing in the National Variety Testing Project (NVT), and Department of Agriculture and Food (DAFWA) wheat agronomy project.

This information includes variety summaries, agronomic, disease and herbicide tolerance characteristics and medium to long-term yield performance. There is a review of regional NVT performance, time of sowing experiments and observed flowering dates in 2011. By combining agronomy research outcomes with other related wheat research this document provides current information to assist with variety choice and management for 2012.

Wheat Variety Guide For Wa 2011, Brenda Shackley, Sarah Ellis, Christine Zaicou, Harmohinder Dhammu, Manisha Shankar

Bulletins 4000 -

The wheat variety guide summarises performance characteristics of commercially available wheats which have undergone testing in the National Variety Trials Project (NVT), breeding organisations crop variety testing and Department of Agriculture and Food (DAFWA) variety specific agronomy projects.

This information includes variety summaries, agronomic, disease and herbicide tolerance characteristics and medium to long-term yield performance. A review of regional performance in 2010 is followed by a comprehensive summary of 2010 variety time of sowing experiments and observed flowering dates.

By combining agronomy research outcomes with other related wheat research this document provides current information to assist with variety choice and …

Wheat Variety Guide 2010 Western Australia, Christine Zaicou, Steve Penny, Brenda Shackley, Sarah Ellis, Shahajahan Miyan, Harmohinder Dhammu, Manisha Shankar, Darshan Sharma

Bulletins 4000 -

This guide summarises performance characteristics of commercially available wheats which have undergone testing in the National Variety Testing Project (NVT), breeding organisations crop variety testing and Department of Agriculture and Food (DAFWA) variety specific agronomy projects. This information includes variety summaries, agronomic, disease and herbicide tolerance characteristics and medium to long-term yield performance. A review of regional performance in 2009 is followed by a comprehensive summary of 2009 variety time of sowing experiments and observed flowering dates.

By combining agronomy research outcomes with other related wheat research this document provides current information to assist with variety choice and management for …

Crop Updates 2010 - Weeds, Lorinda Hunt, Andrew Blake, Catherine Borger, Glen Riethmuller, Abul Hashem, Harmohinder Dhammu, David Nicholson, Vince Lambert, Russell Quartermaine, Roberto Busi, Todd Gaines, Sudheesg Manalil, Stephen Powles, Aik Cheam, Siew Lee, Peter Newman, Greg Doncon, Steve Davies, Michael Walsh, John Moore, Murray Gillespie, Sally Peltzer, Alex Douglas

Crop Updates

This session covers eighteen papers from different authors:

Herbicides

1. Herbicide control of slender iceplant, Lorinda Hunt, and Andrew Blake Department of Agriculture and Food

2. Herbicide tolerance of saltbush and bluebush, Lorinda Hunt, and Andrew Blake Department of Agriculture and Food

3. Chemical control of windmill grass, Catherine Borger, Glen Riethmuller and Abul Hashem, Department of Agriculture and Food

4. Use high water rates when applying pre-seeding herbicides to fields with high stubble density, Catherine Borger and Abul Hashem, Department of Agriculture and Food

5. Herbicide tolerance of lupins – influence of soil type and …

Crop Updates - 2009 Katanning, Murray Scholz, Peter Newman, Glenn Adam, Trevor Bell, Michael Whitehead, W. K. Anderson, Chris Gazey, J. Andrew, R. Pearce, Bill Bowden, Wayne Pluske, Jeremy Lemon, D. C. Edmeades, J. J. Russell, Blakely H. Paynter, David Ferris, Abul Hashen, Catherine Borger, Stephen B. Powels, Qin Yu, Mechelle Owen, Roberto Busi, Sudheesh Manalil, Sally Peltzer, David Minkey, Raj Malik

Crop Updates

This session covers seventeen papers from different authors

1. GM canola – How will it affect the way I farm? Murray Scholz, 2008 Nuffield scholar, Southern NSW

2. Eight years of IWM smashes tyegrass seed banks by 98% over 31 focus paddocks, Peter Newman, Glenn Adam & Trevor Bell, Department of Agriculture and Food

3. The global economic climate and impacts on agriculture, profile on Michael Whitehead Rabobank New York

4. Lessons from five years of cropping systems research, W.K. Anderson, Department of Agriculture and Food

5. Case study of a 17year old agricultural lime trial, C. Gazey, Department of Agriculture …

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Crop Updates 2009 - Cereals, Jeff Baldock, Doug Edmeades, Mark Seymour, Paul Carmody, Ian Pritchard, Alan Meldrum, Michael Robertson, Roger Lawes, Rob Sands, Peter White, Felicity Byrne, Andrew Bathgate, Kedar Adhikari, Tanveer Khan, Stuart Morgan, Alan Harris, P. Gaur, K. M. H. Siddique, H. Clarke, N. C. Turner, W. Macleod, S. Morgan, Chris Veitch, Tony Leonforte, Kithsiri Jayasena, Geoff J. Thomas, Rob Loughman, Kazue Tanaka, Ravjit Khangura, Mohammad Amjad, Richard Oliver, Dusty Severtson, Peter Mangano, John Botha, Brenda A. Coutts, Manisha Shankar, Kasia Rybak, Michael Baker, Andrea Hills, Shahajahan Miyan, Peter Portmann, Nicole Rice, Robert Henry, Jeff Russell, Blakely H. Paynter, Linda Price, Brenda Shackley, Vicki Scanlan, Darshan Sharma, Christine M. Zaicou-Kunesch

Crop Updates

This session covers twenty seven papers from different authors:

PLENARY

1. Building soil carbon for productivity and implications for carbon accounting, Jeff Baldock, CSIRO Land and Water, Adelaide, SA

2. Fact or Fiction: Who is telling the truth and how to tell the difference, Doug Edmeades, agKnowledge Ltd, Hamilton

3. Four decades of crop sequence trials in Western Australia, Mark Seymour,Department of Agriculture and Food

BREAK CROPS

4. 2008 Break Crops survey Report, Paul Carmody,Development Officer, Department of Agriculture and Food

5. Attitudes of Western Australian wheatbelt growers to ‘Break Crops’, Paul Carmody and Ian …

Wheat Variety Guide 2009 Western Australia, Ben Curtis, Steve Penny, Christine Zaicou, Harmohinder Dhammu, Sarah Ellis, Dorthe Jorgensen, Shahajahan Miyan, Brenda Shackley, Darshan Sharma

Bulletins 4000 -

This guide summarises performance characteristics of commercially available wheats which have undergone testing in the National Variety Testing Project (NVT), breeding organisations crop variety testing and Department of Agriculture and Food (DAFWA) variety specific agronomy projects. This information includes variety summaries, agronomic, disease and herbicide tolerance characteristics and medium to long-term yield performance. A review of regional performance in 2008 is followed by a comprehensive summary of 2008 variety time of sowing experiments and observed flowering dates.

By combining agronomy research outcomes with other related wheat research this document provides current information to assist with variety choice and management for …

Wheat Variety Guide 2008 Western Australia, Christine Zaicou, Ben Curtis, Harmohinder Dhammu, Sarah Ellis, Dorthe Jorgensen, Shahajahan Miyan, Steve Penny, Brenda Shackley, Darshan Sharma

Bulletins 4000 -

This guide summarises performance characteristics of commercially available wheats and some pre-commercial lines. These lines have undergone testing in the National Variety Testing Project (NVT), Department of Agriculture and Food, Western Australia (DAFWA) wide-scale crop variety testing (CVT) and/or variety specific agronomy projects. This information includes variety summaries (Table 1), agronomic, disease and herbicide tolerance characteristics (Tables 2 to 4), medium- to long-term yield performance by wheat grade and Agzone (Tables 5 and 6). A review of regional performance in 2007 is followed by a comprehensive summary of 2007 variety time of sowing experiments (Tables 7 to 14) and flowering …

Crop Updates 2007 - Cereals, Rob Loughman, R. Lance, I. Barclay, G. Crosbie, S. Harasymow, W. Lambe, Chengdao Li, R. Mclean, C. Moore, K. Stefanova, A. Tarr, R. Wilson, Matu Peipi, Matt Whiting, Christine M. Zaicou-Kunesch, Shahajahan Miyan, Brenda Shackley, Len J. Wade, Lindsay W. Bell, Felicity Byrne (Nee Flugge), Mike A. Ewing, Blakely Paynter, Andrea Hills, Raj Malik, Kelly Winfield, Harmohinder Dhammu, Vince Lambert, Chris Roberts, Jeremy Lemon, Geoff J. Thomas, Ian Hartley, Andrew Taylor, Manisha Shankar, John Majewski, Vivien Vanstone, Brenda A. Coutts, Monica Kehoe, Roger Jones, Geoffrey Dwyer, Belinda Welsh, Cuiping Wang, Linda Price

Crop Updates

This session covers twenty six papers from different authors:

CEREAL BREEDING

1. Strategies for aligning producer and market imperatives in cereal breeding in Western Australia, R. Loughman, R. Lance, I. Barclay, G. Crosbie, S. Harasymow, W. Lambe, C. Li, R. McLean, C. Moore, K. Stefanova, A. Tarr and R. Wilson, Department of Agriculture and Food

2. LongReach plant breeders wheat variety trials – 2006, Matu Peipi and Matt Whiting, LongReach Plant Breeders

WHEAT AGRONOMY

3. Response of wheat varieties to sowing time in the northern agricultural region in 2006, Christine Zaicou, Department of Agriculture and Food

4. Response …

Growing Chinese Cabbage In Western Australia, John Burt, Dennis Phillips, David Gatter

Bulletins 4000 -

Chinese cabbage is a member of the Brassiceae family, which may be called brassicas, crucifers or cole crops. This includes various crops such as broccoli, Brussels sprouts, cauliflower, cabbage, radish, turnips, swedes and weeds such as wild radish.

In general trade, the term Chinese cabbage can loosely be given to both the heading types (Brasssica rapa L. subsp. pekinensis) and to non heading types such as pak-choi (Brassica rapa L. subsp. chinensis). This Bulletin deals with the heading type of Chinese cabbage. The Chinese name is Wong Bok, and this name is often used in Australia.